Polarimetric measurements

Depending on the wavelength, optical active substances are turning the polarisation plane of light. This can be used to either measure small concentrations at short wavelengths or to achieve a better resistance for measurements at longer wavelengths, e.g. for absorbing samples.ORD quartz

Figure: Exemplary measurement of the optical rotation dispersion (ORD) of a reference quartz plate.

Upon your request and depending on the wavelength we are measuring your samples with a reference polarimeter as services. This helps you to find out, which polarimeters fits your needs and which rotating angles or optical activities you can  expect. If you are already using one or more polarimeters, you can control your instrument with measuring results from Schmidt + Haensch.

Therefore, the offered services, which can be performed at our laboratory, are the measuring of the rotation angle of a optical active substance at different wavelengths by using a reference polarimeter and the determining of the ORD curve (rotation angle α as function of the wavelength λ).

  • Solid and liquid samples
  • Temperatures: 18…40 °C (liquids) / 18…22 °C (solids)
  • Wavelengths: 589.3, 404.7, 546.1, 578.5, 643.8, 852.9, 895.2, others on request
  • Accuracy: Δ α = 0.002°